bash completion

bash completion

$ complete -W "--help --verbose --version" foo

$ foo <TAB>
--help     --verbose  --version

$ foo --v
--verbose  --version

$ foo --ver

[!NOTE|label:references]
* iMarslo: bash completion troubleshooting for linux

* iMarslo : _vim()
create bash completion
* Creating a bash completion script

* An introduction to bash completion: part 1
* An introduction to bash completion: part 2
$ complete -W "--help --verbose --version" foo
8.7 Programmable Completion Builtins

8.6 Programmable Completion

8.8 A Programmable Completion Example

cykerway/complete-alias

Multi Level Bash Completion

List all commands that a shell knows

Integralist/1. bash autocomplete for your custom programs.md

8.6 Programmable Completion : _completion_loader()

8.4.6 Letting Readline Type For You
paths:

osx: $(brew --prefix)/etc/bash_completion.d

completion files in bash-completion@2: $(brew --prefix bash-completion@2)/share/bash-completion/completions/

centos: /usr/share/bash-completion/completions or /etc/bash_completion.d

ubuntu: /usr/share/bash-completion/completions

print existing completion

$ complete -p vim
complete -o bashdefault -o default -F _fzf_opts_completion vim

$ complete -p ffs
complete -o bashdefault -o default -o nosort -F _fd ffs

$ complete -p ff
complete -o bashdefault -o default -o nosort -F _fd ff

remove completion

$ complete -p vim
complete -o bashdefault -o default -F _fzf_opts_completion vim

$ complete -r vim

$ complete -p vim
-bash: complete: vim: no completion specification

list all completions

[!TIP|label:references:]

$ compgen --help
Display possible completions depending on the options

COMMAND	DESCRIPTION
`$ compgen -c`	commands
`$ compgen -a`	aliases
`$ compgen -b`	built-ins
`$ compgen -k`	keywords
`$ compgen -A function`	functions
`$ compgen -A function -abck`	all above

$ complete

# show all commands
$ compgen -c

details...

$ complete
complete -o default -F _quotaon quotaon
complete -o default -F _fzf_path_completion mv
complete -F _postcat postcat
complete -o default -o nospace -v -F _fzf_var_completion printenv
complete -o default -F __start_kubectl kcn
complete -F _filedir_xspec mpg321
complete -F _filedir_xspec tex
complete -F _make gmake
complete -o bashdefault -o default -F _fzf_path_completion diff3
complete -o default -F _ansible ansible
complete -o default -F _fzf_path_completion head
complete -o default -F __start_kubectl kt1
complete -o default -F __start_kubectl kt2
complete -o default -F _fzf_path_completion uniq
complete -F _command else
complete -o default -F __start_kubectl kt3
complete -F _ldapdelete ldapdelete
complete -F _configure configure
complete -F _filedir_xspec freeamp
complete -F _lzma lzma
complete -o default -F __start_kubectl kcc
complete -F _filedir_xspec gqmpeg
complete -F _filedir_xspec texi2html
complete -o default -F _complete_groovydoc groovydoc
complete -F _filedir_xspec hbpp
complete -F _xsltproc xsltproc
complete -F _filedir_xspec jadetex
complete -F _docker droot
complete -o default -F _longopt mkfifo
complete -o bashdefault -o default -F _fzf_path_completion svn
complete -o default -F _fzf_path_completion tee
complete -F _javaws javaws
complete -F _mktemp mktemp
complete -F _filedir_xspec rpm2cpio
complete -F _docker dvi
complete -F _make pmake
complete -o default -F _repquota repquota
complete -F _filedir_xspec hbrun
complete -F _autoscan autoscan
complete -o default -F __start_kubectl kubectl
complete -o default -F _screen screen
complete -F _filedir_xspec ps2pdf14
complete -o default -F _fzf_path_completion grep
complete -F _fzf_path_completion vi
complete -F _autoreconf autoheader
complete -F _composite composite
complete -F _fzf_path_completion bat
complete -F _filedir_xspec ps2pdf13
complete -o default -F _longopt objdump
complete -F _filedir_xspec ps2pdf12
complete -o default -F _longopt sha1sum
complete -o default -F _longopt cut
complete -F _filedir_xspec lyx
complete -o bashdefault -o default -F _fzf_path_completion file
complete -F _gcc gpc
complete -F _filedir_xspec latex
complete -o default -F _look look
complete -F _gradle gradlew.bat
complete -o bashdefault -o default -F _fzf_path_completion hx
complete -F _filedir_xspec poedit
complete -F _fzf_path_completion view
complete -o bashdefault -o default -F _fzf_path_completion dirname
complete -F _function typeset
complete -o bashdefault -o default -F _fzf_path_completion hg
complete -F _command nohup
complete -a -F _fzf_alias_completion unalias
complete -F _vipw vipw
complete -g groupdel
complete -F _make gnumake
complete -u groups
complete -F _filedir_xspec chromium-browser
complete -F _filedir_xspec opera
complete -F _filedir_xspec kbabel
complete -F _fzf_host_completion telnet
complete -F _gcc g77
complete -F _filedir_xspec bzme
complete -o bashdefault -o default -F _fzf_complete_ssh ssh
complete -F _command vsound
complete -c which
complete -F _fzf_path_completion tar
complete -o default -F _longopt m4
complete -F _filedir_xspec madplay
complete -o default -F _fzf_opts_completion fzf-tmux
complete -F _docker drm
complete -F _filedir_xspec dviselect
complete -o default -F _fzf_path_completion cp
complete -F _mas mas
complete -F _animate animate
complete -F _man whatis
complete -o default -F _complete_groovysh groovysh.sh
complete -F _filedir_xspec evince
complete -o bashdefault -o default -F _brew brew
complete -F _docker dcleanall
complete -F _filedir_xspec realplay
complete -o default -F _longopt strip
complete -o bashdefault -o default -o nospace -F __git_wrap__gitk_main gitk
complete -v readonly
complete -o nospace -F _fzf_path_completion rsync
complete -F _ctest ctest
complete -o nospace -F _fzf_dir_completion cd
complete -o default -F _complete_groovydoc groovydoc.bash
complete -F _known_hosts showmount
complete -F _filedir_xspec kdvi
complete -o default -F _longopt tac
complete -F _ldapaddmodify ldapmodify
complete -F _filedir_xspec elinks
complete -F _known_hosts fping
complete -o default -F _longopt env
complete -o default -F _quota quota
complete -F _gradle ./gradlew
complete -u chfn
complete -F _docker drp
complete -F _filedir_xspec compress
complete -F _filedir_xspec pdfjadetex
complete -F _filedir_xspec kghostview
complete -F _man man
complete -F _filedir_xspec pbunzip2
complete -o default -F _brctl brctl
complete -c type
complete -F _ldapcompare ldapcompare
complete -F _known_hosts ssh-installkeys
complete -F _filedir_xspec iceweasel
complete -F _filedir_xspec gtranslator
complete -F _fzf_path_completion unzip
complete -o default -F _longopt expand
complete -o default -F _complete_groovyConsole groovyConsole.bash
complete -o bashdefault -o default -o nospace -F _fzf_path_completion git
complete -F _filedir_xspec lrunzip
complete -o default -F _fzf_path_completion ln
complete -F _command aoss
complete -F _docker drps
complete -F _filedir_xspec ggv
complete -F _filedir_xspec oomath
complete -F _filedir_xspec dvipdfmx
complete -o default -F _fzf_path_completion ld
complete -F _fzf_path_completion gunzip
complete -F _filedir_xspec makeinfo
complete -F _filedir_xspec okular
complete -o default -F _complete_groovysh groovysh
complete -F _ldapsearch ldapsearch
complete -F _command xargs
complete -j -P '"%' -S '"' jobs
complete -o default -F _complete_groovy groovy.sh
complete -F _filedir_xspec oowriter
complete -o bashdefault -o default -F _fzf_path_completion emacsclient
complete -F _cpack cpack
complete -o default -F _fzf_path_completion tail
complete -o default -F _longopt unexpand
complete -o default -F _longopt netstat
complete -F _docker dexe
complete -o default -F _fzf_path_completion ls
complete -F _filedir_xspec epiphany
complete -o nospace -F __gio gio
complete -o bashdefault -o default -F _fzf_path_completion nvim
complete -o dirnames -o nospace -F _fzf_dir_completion pushd
complete -F _filedir_xspec acroread
complete -o default -o nospace -v -F _fzf_var_completion unset
complete -F _postmap postalias
complete -F _nmap nmap
complete -o default -F _longopt csplit
complete -F _known_hosts rsh
complete -F _filedir_xspec sxemacs
complete -F _command exec
complete -F _filedir_xspec aviplay
complete -F _ldapmodrdn ldapmodrdn
complete -F _filedir_xspec rgvim
complete -F _chsh chsh
complete -F _autoconf autoconf
complete -o default -F _longopt nm
complete -o default -F _longopt nl
complete -o default -F _complete_grape grape.bash
complete -o nospace -F _user_at_host ytalk
complete -F _fzf_proc_completion kill
complete -F _fzf_path_completion java
complete -F _cmake cmake
complete -u sux
complete -F _cancel cancel
complete -F _filedir_xspec znew
complete -o default -F _complete_groovydoc groovydoc.sh
complete -F _id id
complete -o default -F _longopt paste
complete -F _ldapaddmodify ldapadd
complete -F _docker dip
complete -o bashdefault -F _perldoc perldoc
complete -F _filedir_xspec kwrite
complete -F _root_command really
complete -o default -F _complete_groovyc groovyc.bash
complete -o bashdefault -o default -o nospace -F __git_wrap__tig_main tig
complete -F _filedir_xspec firefox
complete -o bashdefault -o default -F _fzf_path_completion open
complete -F _ip ip
complete -o default -F __start_kubectl klc
complete -F _docker drit
complete -F _filedir_xspec dvipdfm
complete -F _filedir_xspec ly2dvi
complete -F _filedir_xspec oodraw
complete -F _docker drun
complete -F _import import
complete -o default -F __start_kubectl kcswatch
complete -F _gzip pigz
complete -o default -F __start_kubectl kln
complete -F _autoscan autoupdate
complete -F _known_hosts dig
complete -o nospace -F _user_at_host talk
complete -F _filedir_xspec xemacs
complete -F _docker dls
complete -o nospace -F _dd dd
complete -F _jarsigner jarsigner
complete -F _filedir_xspec kpdf
complete -F _man apropos
complete -o default -F _longopt df
complete -F _command eval
complete -F _docker di
complete -F _postsuper postsuper
complete -F _postconf postconf
complete -F _filedir_xspec bibtex
complete -o default -F _pip_completion pip
complete -F _docker dclr
complete -F _postfix postfix
complete -F _fzf_path_completion chown
complete -F _filedir_xspec netscape
complete -o default -F _longopt wget
complete -F _command do
complete -F _cargo cargo
complete -F _gradle gradle
complete -F _pgrep pgrep
complete -F _filedir_xspec gview
complete -F _filedir_xspec lzfgrep
complete -o bashdefault -o default -o nosort -F _fd ffs
complete -F _filedir_xspec lzless
complete -o default -F _fzf_path_completion du
complete -F _renice renice
complete -F _lsof lsof
complete -F _docker dv
complete -F _known_hosts tracepath
complete -o default -F __start_kubectl kit
complete -o default -F _fzf_path_completion wc
complete -F _fzf_path_completion gzip
complete -F _newgrp newgrp
complete -o default -F _ansible-galaxy ansible-galaxy
complete -F _filedir_xspec cdiff
complete -F _fzf_path_completion emacs
complete -F _filedir_xspec zipinfo
complete -F _docker dcleani
complete -F _filedir_xspec google-chrome
complete -F _gcc c++
complete -F _crontab crontab
complete -F _filedir_xspec rview
complete -A shopt shopt
complete -F _docker dcleanc
complete -F _root_command sudo
complete -F _killall pkill
complete -F _fzf_path_completion javac
complete -F _fzf_path_completion ftp
complete -o default -F _longopt uname
complete -o bashdefault -o default -F _rg rg
complete -F _known_hosts ping
complete -F _filedir_xspec wine
complete -F _filedir_xspec galeon
complete -F _filedir_xspec pdflatex
complete -F _docker dex
complete -F _known_hosts rlogin
complete -o default -F _fzf_opts_completion fzf
complete -F _filedir_xspec portecle
complete -o default -F _longopt sha384sum
complete -o default -F _fzf_path_completion rm
complete -F _filedir_xspec modplugplay
complete -F _ri ri
complete -o default -F _quotaoff quotaoff
complete -F _filedir_xspec dillo
complete -F _filedir_xspec fbxine
complete -F _filedir_xspec lokalize
complete -F _root_command gksudo
complete -F _command nice
complete -o default -F _longopt tr
complete -o default -F _npm_completion npm
complete -F _filedir_xspec oocalc
complete -o default -F _complete_groovyc groovyc.sh
complete -F _gradle gradlew
complete -o default -F _longopt sha256sum
complete -F _root_command gksu
complete -F _filedir_xspec qiv
complete -F _chgrp chgrp
complete -F _filedir_xspec ps2pdfwr
complete -o default -F _edquota edquota
complete -F _filedir_xspec harbour
complete -o bashdefault -o default -F _fzf_path_completion basename
complete -o default -F _longopt ptx
complete -F _filedir_xspec dvitype
complete -o nospace -F __gsettings gsettings
complete -F _gradle ./gradlew.bat
complete -F _known_hosts traceroute
complete -F _fzf_path_completion bzip2
complete -j -P '"%' -S '"' fg
complete -o bashdefault -o default -o nosort -F _fd ff
complete -F _convert convert
complete -F _filedir_xspec unpigz
complete -o default -F _complete_groovy groovy
complete -o bashdefault -o default -o nosort -F _fd fd
complete -F _filedir_xspec mozilla
complete -F _filedir_xspec dvips
complete -o default -F _longopt who
complete -F _montage montage
complete -F _complete compgen
complete -F _filedir_xspec ps2pdf
complete -F _filedir_xspec gpdf
complete -F _complete complete
complete -F _filedir_xspec texi2dvi
complete -o dirnames -F _umount umount
complete -F _function function
complete -o bashdefault -o default -F _fzf_path_completion mvim
complete -o default -F _fzf_path_completion less
complete -o default -F _longopt mknod
complete -F _command padsp
complete -F _passwd passwd
complete -F _filedir_xspec kate
complete -F _pkg_config pkg-config
complete -o default -F _longopt bison
complete -F _filedir_xspec mozilla-firefox
complete -F _filedir_xspec kid3-qt
complete -o default -F _longopt od
complete -F _fzf_path_completion bunzip2
complete -o default -o dirnames -F _mount mount
complete -F _function declare
complete -F _filedir_xspec pdftex
complete -F _ag ag
complete -o default -o nospace -F _fzf_var_completion export
complete -F _vipw vigr
complete -o default -F _ansible-doc ansible-doc
complete -F _nslookup nslookup
complete -F _ssh slogin
complete -o nospace -F _alias alias
complete -F _fzf_path_completion gvim
complete -F _filedir_xspec kaffeine
complete -F _stream stream
complete -F _docker drdp
complete -o default -F _complete_grape grape.sh
complete -F _filedir_xspec mpg123
complete -F _fzf_path_completion find
complete -F _filedir_xspec lzegrep
complete -o default -F _ansible-pull ansible-pull
complete -o default -F _longopt split
complete -o bashdefault -o default -F _fzf_path_completion zip
complete -F _ssh autossh
complete -F _filedir_xspec xv
complete -o default -F _longopt fold
complete -F _known_hosts mtr
complete -o bashdefault -o default -F _fzf_path_completion ruby
complete -o nospace -F _fzf_path_completion scp
complete -F _known_hosts ping6
complete -F _filedir_xspec timidity
complete -F _filedir_xspec xdvi
complete -F _filedir_xspec xfig
complete -F _filedir_xspec xpdf
complete -o default -F _longopt indent
complete -o bashdefault -o default -F _fzf_path_completion chmod
complete -o nospace -F _user_at_host finger
complete -o bashdefault -o default -o nospace -F _python_argcomplete pipx
complete -F _ktutil ktutil
complete -F _xz xz
complete -F _filedir_xspec oobase
complete -F _docker dpa
complete -F _fzf_path_completion perl
complete -F _root_command kdesudo
complete -F _docker drmi
complete -F _filedir_xspec ogg123
complete -F _filedir_xspec lzgrep
complete -u w
complete -F _filedir_xspec ee
complete -F _sh sh
complete -o default -F __start_kubectl kubecolor
complete -F _docker dps
complete -F _filedir_xspec gharbour
complete -u su
complete -o default -F _complete_grape grape
complete -o default -F _longopt irb
complete -F _known_hosts host
complete -o default -F __start_kubectl k
complete -o bashdefault -o default -F _fzf_path_completion ex
complete -o default -F _complete_groovyConsole groovyConsole
complete -o nospace -F __gdbus gdbus
complete -F _sysctl sysctl
complete -F _sqlite3 sqlite3
complete -o default -F _iconv iconv
complete -F _command tsocks
complete -F _docker d
complete -F _xmllint xmllint
complete -o default -F _fzf_path_completion diff
complete -F _ldapwhoami ldapwhoami
complete -F _bzip2 pbzip2
complete -F _postmap postmap
complete -o bashdefault -o filenames -F _pandoc pandoc
complete -F _filedir_xspec bzcat
complete -F _filedir_xspec unlzma
complete -F _filedir_xspec dragon
complete -F _xzdec xzdec
complete -o default -F _longopt shar
complete -F _filedir_xspec ooimpress
complete -F _cpio cpio
complete -F _filedir_xspec xanim
complete -o default -F _complete_groovysh groovysh.bash
complete -o default -F _ansible-vault ansible-vault
complete -j -P '"%' -S '"' disown
complete -F _filedir_xspec xine
complete -o default -F _longopt bash
complete -o default -F _longopt md5sum
complete -o bashdefault -o default -F _fzf_path_completion source
complete -F _filedir_xspec amaya
complete -F _filedir_xspec gv
complete -F _make make
complete -o default -F _fzf_path_completion curl
complete -A stopped -P '"%' -S '"' bg
complete -o default -F __start_kubectl kubeproxy
complete -F _filedir_xspec kid3
complete -o nospace -F __gresource gresource
complete -F _filedir_xspec lilypond
complete -o default -F _longopt bc
complete -F _identify identify
complete -F _filedir_xspec modplug123
complete -o default -F __start_kubectl k4
complete -F _pack200 pack200
complete -A binding bind
complete -o default -F _setquota setquota
complete -b builtin
complete -F _unpack200 unpack200
complete -o default -F _quotacheck quotacheck
complete -F _filedir_xspec pbzcat
complete -F _known_hosts tracepath6
complete -o default -F _complete_groovyc groovyc
complete -o default -F _longopt shasum
complete -F _command ltrace
complete -o default -F __start_kubectl k3
complete -F _fzf_path_completion gcc
complete -F __app gapplication
complete -o bashdefault -o default -F _fzf_path_completion xdg-open
complete -o default -F _ansible-playbook ansible-playbook
complete -u write
complete -F _known_hosts traceroute6
complete -F _fzf_path_completion jar
complete -o default -F _longopt date
complete -F _gcc gcj
complete -F _filedir_xspec rgview
complete -o default -F _fzf_path_completion cat
complete -o default -F _fzf_path_completion awk
complete -o default -F _complete_groovyConsole groovyConsole.sh
complete -o default -F _longopt sha512sum
complete -F _filedir_xspec unxz
complete -o default -F _longopt seq
complete -o default -F _longopt mkdir
complete -F _filedir_xspec rvim
complete -o default -F __start_kubectl krn
complete -o default -F _longopt sha224sum
complete -A helptopic help
complete -F _fzf_path_completion sftp
complete -A setopt set
complete -o default -F __start_kubectl krc
complete -F _compare compare
complete -F _tmux tmux
complete -F _ssh_copy_id ssh-copy-id
complete -o default -F _fzf_path_completion sort
complete -o default -F _longopt pr
complete -o default -F _longopt colordiff
complete -o default -F _fzf_path_completion patch
complete -F _fzf_path_completion g++
complete -o bashdefault -o default -F _fzf_path_completion python
complete -F _conjure conjure
complete -F _ldappasswd ldappasswd
complete -F _filedir_xspec playmidi
complete -o default -F __start_kubectl kcEvicted
complete -o default -F _openssl openssl
complete -o default -F _longopt fmt
complete -o default -F _fzf_path_completion sed
complete -F _tcpdump tcpdump
complete -F _javadoc javadoc
complete -F _filedir_xspec lzcat
complete -o default -F _longopt gperf
complete -F _command time
complete -F _filedir_xspec zcat
complete -F _mogrify mogrify
complete -F _display display
complete -F _root_command fakeroot
complete -o default -F _complete_groovy groovy.bash
complete -F _filedir_xspec lynx
complete -u slay
complete -F _filedir_xspec uncompress
complete -F _autoreconf autoreconf
complete -F _filedir_xspec xzcat
complete -o default -F _fzf_dir_completion rmdir
complete -F _filedir_xspec slitex
complete -o bashdefault -o default -F _fzf_opts_completion vim
complete -F _filedir_xspec aaxine
complete -F _filedir_xspec advi
complete -o bashdefault -o default -F _fzf_path_completion more
complete -o default -F _longopt units
complete -F _docker dcleanfull
complete -o default -F _longopt touch
complete -F _filedir_xspec lzmore
complete -F _command then
complete -F _command command
complete -F _docker dkill
complete -o default -F __start_kubectl kd
complete -F _known_hosts fping6
complete -u runuser
complete -F _filedir_xspec dvipdf
complete -o default -F __start_kubectl kc
complete -F _gradle gradle.bat

patterns in load completion

# i.e. *git*
$ ls -1 "${BASH_COMPLETION_DIR}"/*git*
/opt/homebrew/etc/bash_completion.d/git-completion.bash
/opt/homebrew/etc/bash_completion.d/git-extras
/opt/homebrew/etc/bash_completion.d/git-lfs
/opt/homebrew/etc/bash_completion.d/git-prompt.sh

# -- solution 1 --
if test -d "${BASH_COMPLETION_DIR}"; then
  if ls "${BASH_COMPLETION_DIR}"/*git*    >/dev/null 2>&1; then source <( cat "${BASH_COMPLETION_DIR}"/*git*    ) ; fi
  if ls "${BASH_COMPLETION_DIR}"/*docker* >/dev/null 2>&1; then source <( cat "${BASH_COMPLETION_DIR}"/*docker* ) ; fi
fi

# -- solution 2 --
# `compgen -G "${pattern}"` == `ls ${pattern}`
for pattern in '*git*' '*docker*'; do
  if compgen -G "${BASH_COMPLETION_DIR}/${pattern}" > /dev/null; then
    for f in "${BASH_COMPLETION_DIR}"/${pattern}; do source "${f}"; done
  fi
done

# --solution 3 --
# using `shopt -s nullglob` to avoid error when no match files
shopt -s nullglob
for script in "${BASH_COMPLETION_DIR}"/{*git*,*docker*}; do
  [[ -f "${script}" ]] && source "${script}"
done
shopt -u nullglob

osx

[!NOTE|label:references:]

Bash Completion

How to Enable Bash Completion on macOS

iMarslo: brew bash-completion@2

$ brew install bash-completion
# or
$ brew install bash-completion@2

# -- add to bash_profile --
$ echo '[[ -r "$(brew --prefix)/etc/profile.d/bash_completion.sh" ]] && source "$(brew --prefix)/etc/profile.d/bash_completion.sh"' >> ~/.bash_profile
$ echo 'command -v brew >/dev/null && source "$(brew --prefix git)"/etc/bash_completion.d/git-*.sh || source "$(brew --prefix git)"/etc/bash_completion.d/git-prompt.sh' >> ~/.bash_profile
# or
$ echo "[ -f /usr/local/etc/bash_completion  ] && . /usr/local/etc/bash_completion" >> ~/.bash_profile
$ cat ~/.bash_profile
[ -f /usr/local/etc/bash_completion ] && . /usr/local/etc/bash_completion

to check link of bash-completion

$ brew unlink bash-completion --dry-run
Would remove:
/usr/local/etc/bash_completion
/usr/local/etc/bash_completion.d/abook
/usr/local/etc/bash_completion.d/ant
...

add more completion files

$ fd --gen-completions bash | sudo tee $(brew --prefix)/etc/bash_completion.d/fd

$ brew search completion
==> Formulae
apm-bash-completion       docker-completion         open-completion           stormssh-completion
bash-completion ✔         fabric-completion         packer-completion         t-completion
bash-completion@2         gem-completion            pip-completion            tmuxinator-completion
boom-completion           gradle-completion ✔       rails-completion          vagrant-completion
brew-cask-completion ✔    grunt-completion          rake-completion           wp-cli-completion
bundler-completion        kitchen-completion        ruby-completion           yarn-completion
cap-completion            launchctl-completion      rustc-completion          zsh-completions
conda-zsh-completion      maven-completion          sonar-completion
django-completion         mix-completion            spring-completion

==> Casks
compositor

linux

enable

if ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
fi

add more completion files

$ fd --gen-completions bash | sudo tee /usr/share/bash-completion/completions/fd

centos

$ fd --gen-completions bash | sudo tee /etc/bash_completion.d/fd

bash alias completion

[!TIP|label:rerefences:]

* iMarslo: complete-alias

_complete_alias | cykerway/complete-alias

How to work with complete -F _start_kubectl when alias contains --kubeconfig? | How do I get bash completion for command aliases?

download/install

# download bash_completion.sh for kubectl
$ curl -fsSL https://github.com/cykerway/complete-alias/raw/master/complete_alias -o ~/.bash_completion.sh
# or rhel/centos
$ sudo curl -fsSL https://github.com/marslo/dotfiles/raw/main/.marslo/.completion/complete_alias -o /etc/profile.d/complete_alias.sh
# or osx
$ sudo curl -fsSL https://github.com/marslo/dotfiles/raw/main/.marslo/.completion/complete_alias -o $(brew --prefix)/etc/bash_completion.d/complete_alias

$ sudo chmod +x !$

setup for specific alias

$ echo "complete -F _complete_alias <alias>" >> ~/.bash_profile

# -- example --
# i.e.: for kubec* ( kubectl or kubecolor )
$ complete -o nosort -o bashdefault -o default -F _complete_alias $(alias | sed -rn 's/^alias ([^=]+)=.+kubec.+$/\1/p' | xargs)

# or
$ alias k=kubectl
$ echo "complete -F _complete_alias k" >> ~/.bash_profile

git alias completion

[!TIP|label:see:]

* iMarslo: alias completion

troubleshooting

-bash: _compopt_o_filenames: command not found
[-bash: \[: too many arguments](../../linux/devenv.md#bash--too-many-arguments)

$ ssh bash_completion: _comp_compgen_known_hosts__impl: -F: an empty filename is specified

[!NOTE|label:references:]

Problem with ssh and bash-completion

Autocomplete server names for SSH and SCP

compgen -A hostname | __fzf_list_hosts

clear completion
```
$ complete -r ssh
```

or add into /usr/local/etc/bash_completion.d/ssh or $(brew --prefix)/etc/bash_completion.d/ssh

ssh completion script

# https://unix.stackexchange.com/a/181603/29178
_ssh_hosts()
{
    local cur prev opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    opts=$(command grep '^Host' ~/.ssh/config ~/.ssh/config.d/* 2>/dev/null | command grep -v '[?*]' | cut -d ' ' -f 2-)

    COMPREPLY=( $(compgen -W "$opts" -- ${cur}) )
    return 0
}

_ssh()
{
    local cur prev configfile
    local -a config
    # configfile="$HOME/.ssh/config"

    COMPREPLY=()
    _get_comp_words_by_ref -n : cur prev
    #cur=`_get_cword :`
    #prev=`_get_pword`

    _ssh_suboption_check && return 0

    case $prev in
        -F|-i|-S)
            _filedir
            return 0
            ;;
        -c)
            _ssh_ciphers
            return 0
            ;;
        -m)
            _ssh_macs
            return 0
            ;;
        -l)
            COMPREPLY=( $( compgen -u -- "$cur" ) )
            return 0
            ;;
        -o)
            _ssh_options
            return 0
            ;;
        -w)
            _available_interfaces
            return 0
            ;;
        -b)
            _ssh_bindaddress
            return 0
            ;;
    esac

    if [[ "$cur" == -F* ]]; then
        cur=${cur#-F}
        _filedir
        # Prefix completions with '-F'
        COMPREPLY=( "${COMPREPLY[@]/#/-F}" )
        cur=-F$cur  # Restore cur
    elif [[ "$cur" == -* ]]; then
        COMPREPLY=( $( compgen -W '-1 -2 -4 -6 -A -a -C -f -g -K -k -M \
            -N -n -q -s -T -t -V -v -X -v -Y -y -b -b -c -D -e -F \
            -i -L -l -m -O -o -p -R -S -w' -- "$cur" ) )
    else
        # Search COMP_WORDS for '-F configfile' or '-Fconfigfile' argument
        set -- "${COMP_WORDS[@]}"
        while [ $# -gt 0 ]; do
            if [ "${1:0:2}" = -F ]; then
                if [ ${#1} -gt 2 ]; then
                    configfile="$(dequote "${1:2}")"
                else
                    shift
                    [ "$1" ] && configfile="$(dequote "$1")"
                fi
                break
            fi
            shift
        done
        # marslo >> disable _known_hosts_real from $configfile
        # marslo >> using self-defined _ssh_hosts function
        # _known_hosts_real -a -F "$configfile" "$cur"
        _ssh_hosts
        if [ $COMP_CWORD -ne 1 ]; then
            _compopt_o_filenames
            COMPREPLY=( "${COMPREPLY[@]}" $( compgen -c -- "$cur" ) )
        fi
    fi

    return 0
}
shopt -u hostcomplete && complete -F _ssh ssh slogin autossh

$ complete -F _ssh ssh

completion